Dubnium Facts

Dubnium Facts
Dubnium (Db) is a synthetic element with an atomic weight of 105. Therefore, it has 105 protons in the nucleus of each of its atoms. Its status as a wholly synthetic element means it does not occur in nature and as a result, has no commercial uses.
Interesting Dubnium Facts:
Dubnium was named after the town in the Soviet Union where a team of researchers first synthesized a sample.
It is a radioactive element, and not found in any naturally occurring states.
Dubnium is a member of the d-block series and is a transactinide element.
It behaves similarly to tantalum, but its chemical properties have not been fully confirmed.
Teams of researchers in both the Soviet Union and the US both isolated samples of dubnium in the 1960s, but the IUPAC designated the Soviet team with the discovery and the name in 1997.
The Dubna team synthesized their sample by targeting americium samples with neon isotope bombardment.
They later used thermal gradient chromatography to separate the reaction products.
The same team discovered a 2.2-second spontaneous fission in the chloride of the sample.
The US team later that year synthesized their own sample of Dubnium by bombarding californium with nitrogen isotope N-15.
The IUPAC initially declared that credit for the discovery should be shared by both teams, as they achieved decay data using different but reliable methods.
IUPAC designated a temporary name to the element, unnilpentium, until a consensus could be reached.
Continued thermochromatography experiments have been conducted since its initial discovery.
As early as 1976, scientists began attempting to synthesize dubnium using cold fusion reactions.
There are sixteen isotopes of dubnium, the most recent discovery of which took place in 2009 with the isolation of Db-270.
There is one retracted isotope of dubnium, Db-255, as it was believed to be the decay byproduct of a different experiment involving the discovery of Bohrium.

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